Non-collapsible float.



No 863,628. PATENTED AUG.'20, 190'7.

E. B. MOWER & E. JOHNSON.

NON-OOLLAPSIBLE FLOAT.

APPLIOAQI ON FILED DEC. 26, 1908.

fzyl a/yfomsx 1H: NORRI5 FETEES cm, WASHINGTON, n. c.

EUGENE B. MOWER AND ELEAZER JOHNSON, OF MINNEAPOLIS, MINNESOTA.

NON-GOLLAPSIBLE FLOAT.

Specification of Letters Patent.

Patented Aug. 20, 1907.

Original application filed December 21, 1905, Serial No. 292,728.Divided and this application filed December 26, 1906.

' Serial No. 349,393.

To all whom it may concern:

Be it known that we, EUGENE B. MowER and ELEAZER J or-rNsoN, citizens ofthe United States, residing at Minneapolis, in thecounty of Hennepin andState of Minnesota, have invented certain new and useful Improvements inNonCollapsible Floats; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to floats such as used for opening and closingvalves, and for other purposes, and has for its object to provide afloat of this character which is non-collapsible, that is, which willnot be crushed or collapsed when subjected to high pressure. Thisapplication is in the nature of a division of our copending applicationS. N. 292,728, filed December 21, 1905 and allowed June 28, 1906,entitled Noncollapsible floats, and is directed to one form of thenon-collapsible float broadly claimed in said earlier application.

The present invention is illustrated in the single view of drawing,which View shows the float partly in side elevation and partly invertical section, some parts being broken away.

In the present application, as in our earlier application, the floatcomprises a main float 11 and a supplemental float 12 having an openbottom. In this form of the device, the supplemental float 12 is rigidlysecured to the main float 11 by a tubular neck 13, the lower end oiwhich opens directly into the said main float and which near its upperend is preferably provided with a plurality of air passages 14. Alsopreferably, the tubular neck 13 is divided, the sections thereof beingconnected by threaded engagement, as indicated at 15, so that thebell-shaped supplemental float 12, together with the upper extremity ofthe tubular neck 13, may be unscrewed and removed from the lower portionof said neck 13 and the main float 11. As shown, the main float 11 isconnected to a lever or arm 10, which arm may be supported in anysuitable way and may operate any suitable mechanism, such, for instance,as the valve shown in our said earlier application.

With this construction, when the float is confined within a boiler orother closed receptacle, containing steam or other fluid under highpressure, the said steam will freely enter the main float 11 through theperforations 14 and tubular neck 13, so that internal and accidentalpressure on said main float will be equal and, hence, there will be notendency to crush or collapse the said main float. When the water in theboiler or other confining receptacle rises on the main float to a pointabove the depending open edge of the supplemental float 12, the aircaged or confined in said supplemental float will prevent the water fromrising within the main float to the altitude of the perforations l4 and,hence, will prevent the water from entering the main float.

The float described is of very small cost and is highly eflicient forthe purposes had in view. It will be found useful in numerous places,such as in boilers, apparatus for dispensing beer, soda water and othercarbonated drinks which are confined under high pressure in thecontaining receptacle from which they are drawn.

What we claim is:

l. The combination with a hollow main float, of a sup plemental floatrigidly connected thereto, and an air vent which is always openaffording communication between the interior of said main float and theupper interior portion of said supplemental float, the said supplementalfloat having an open bottom, substantially as described.

2. The combination with a hollow main float, of a supplemental floatthat is open at its lower portion, and is rigidly connected to said mainfloat, and an air vent affording communication between the interior ofsaid main fioatand the upper interior portion of said supplementalfloat, substantially as described.

3. The combination with a main float 11, and an inverted supplementalfloat 12 that is open in its bottom, of a tubular neck 13 rigidlyconnecting said main and supplemental float and affording communicationbetween the interior of said main float and the upper interior portionof said supplemental float, and which neck 13 is made up of sectionsrigidly but detachably connected by screwthreaded engagement,substantially as described.

In testimony whereof we aflix our signatures in presence of twoWitnesses.

' EUGENE B. MOWER. ELEAZER JOHNSON. Witnesses MALIE HoEL, F. D.MERCHANT.

